161974485

素因数分解:

$3^4\times 5^1\times {\mathrm{399937}}^1$

素因数の和:399954

約数の個数: 20

約数和(自身を含む): 290354988

約数和(自身を除く): 128380503

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 399937, 1199811, 1999685, 3599433, 5999055, 10798299, 17997165, 32394897, 53991495, 161974485]

約数ペア:

[(1, 161974485), (3, 53991495), (5, 32394897), (9, 17997165), (15, 10798299), (27, 5999055), (45, 3599433), (81, 1999685), (135, 1199811), (405, 399937)]